Power-Up Check

1. Plugin any DC wallpacks that are being used with individual intercom stations.

Ifyou plug in DC wallpacks after applying power to the SPS2000A, you

mayget an overload indication at the SPS2000A. This is because the

stationsthat are being powered by wallpacks will draw current from the

SPS2000Auntil their own DC supplies are connected.

11
CHN 1 CHN 2
CLASS 2WIRING 1.5A 24VDC
100-240VAC 60/50 HZ
MADE IN USA
®
INPUT 1
SPEAKER
INPUT 2
LINE LEVEL
1VRMS
CHN 1 CHN 2
CLASS 2WIRING 1.5A 24VDC
100-240VAC 60/50 HZ
MADE IN USA
®
INPUT 1
SPEAKER
INPUT 2
LINE LEVEL
1VRMS
12-15VDC
+-
1
SPEAKERS
PROGRAM
INPUTS
2
LINE LEVEL
1VRMS
P.A. EXP
OUT CHN 2
VOL
PGM 2
VOL
PGM 1
BAL - OUT
UNBAL - IN
PUSH PUSH
CHN 1
To ½ of stations
on channel 2
To ½ of stations
on channel 1 To ½ of stations
on channel 2
To ½ of stations
on channel 1
SPS2000A
Channel 1 Power
Combine / Isolate Switch
set to Combine
US2000A
Internal DIP
switches set
for binaural
operation
SPS2000A
Channel 2 Power
Combine / Isolate Switch
set to Combine
1
1
1
1 1 1
1Denotes 1-channel cables
Program input
cable.From 2
audio sources
Speaker inter-
connect cables.

Figure 6. Using two SPS2000A PowerSupplies to provide a greater

capacity on each channel. Using two SPS2000A PowerSupplies also lets

you independently monitor and adjust volume for both intercom channels

without the need for a separate powered loudspeaker.In this application,

the US2000A should be set for binaural speaker output as described in the

US2000A User Manual.